00277nam a2200109Ia 4500082002800000100004900028245004200077260002300119300001500142500000500157700000500162  a338.476684(42)bN277.PI  aNational Economic Development Office, London  aPlastics industry and its prospectsb  aLondonbHMSOc1972  axii, 148p.  a  a